<template>
  <div class="content">
    <div class="category">
      <div
        :class="{
          category__item: true,
          'category__item--active': currentTab === item.tab,
        }"
        v-for="item in categories"
        :key="item.name"
        @click="() => handleTabClick(item.tab)"
      >
        {{ item.name }}
      </div>
    </div>
    <div class="product">
      <div class="product__item" v-for="item in list" :key="item._id">
        <img
          class="product__item__img"
          src="http://www.dell-lee.com/imgs/vue3/near.png"
        />
        <div class="product__item__detail">
          <h4 class="product__item__title">{{ item.name }}</h4>
          <p class="product__item__sales">月售 {{ item.sales }} 件</p>
          <p class="product__item__price">
            <span class="product__item__yen">&yen;</span>{{ item.price }}
            <span class="product__item__origin">&yen;{{ item.oldPrice }}</span>
          </p>
        </div>
        <div class="product__number">
          <span
            class="product__number__minus iconfont"
            @click="
              () => {
                changeCartItem(shopId, item._id, item, -1);
              }
            "
            >&#xe66d;</span
          >
          {{ cartList?.[shopId]?.[item._id]?.count || 0 }}
          <span
            class="product__number__plus iconfont"
            @click="
              () => {
                changeCartItem(shopId, item._id, item, 1);
              }
            "
            >&#xe60f;</span
          >
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import { reactive, ref, toRefs, watchEffect } from "vue";
import { useRoute } from "vue-router";
import { useStore } from "vuex";
import { get } from "../../utils/request";
import { useCommonCartEffect } from "../../effects/cartEffects";
import axios from "axios";

const categories = [
  { name: "全部商品", tab: "all" },
  { name: "秒杀", tab: "seckill" },
  { name: "新鲜水果", tab: "fruit" },
];

// Tab 切换相关的逻辑
const useTabEffect = () => {
  const currentTab = ref(categories[0].tab);
  const handleTabClick = (tab) => {
    currentTab.value = tab;
  };
  return { currentTab, handleTabClick };
};

// 列表内容相关的逻辑
const useCurrentListEffect = (currentTab, shopId) => {
  const route = useRoute();
  // const shopId = route.params.id;
  const content = reactive({ list: [] });

  console.log(currentTab.value);
  // const getContentData = async () => {
  //   const result = await get(`/api/shop/${shopId}/products`, {
  //     tab: currentTab.value,
  //   });
  //   if (result?.errno === 0 && result?.data?.length) {
  //     content.list = result.data;
  //   }
  // };
  //获取列表内容
  const getContentData = async () => {
    axios
      .get("/api/shop/shop/id/products", {
        tab: currentTab.value,
      })
      .then((result) => {
        let { data } = result.data;
        if (result.data?.errno === 0 && result.data?.data) {
          content.list = data;
        }
      });
  };

  //监听currentTab数据一变，就立即执行
  watchEffect(() => {
    getContentData();
  });

  const { list } = toRefs(content);
  return { list };
};
//购物车相关逻辑
/* const useCartEffect = () => {
  const store = useStore();
  const { cartList } = toRefs(store.state);
  const changeCartItemInfo = (shopId, productId, productInfo, num) => {
    //commmit发出去触发store的addItemToCart
    store.commit("changeCartItemInfo", {
      shopId,
      productId,
      productInfo,
      num,
    });
    console.log(shopId, productId, productInfo, num);
  };
  return { cartList, changeCartItemInfo };
};
 */
export default {
  name: "Content",
  setup() {
    const route = useRoute();
    const store = useStore();
    const shopId = route.params.id;
    const { currentTab, handleTabClick } = useTabEffect();
    const { list } = useCurrentListEffect(currentTab, shopId);
    const { changeCartItemInfo, cartList } = useCommonCartEffect(shopId);
    // const changeShopName = (shopId, shopName) => {
    //   store.commit("changeShopName", {
    //     shopId,
    //     shopName,
    //   });
    // };
    const changeCartItem = (shopId, productId, item, num) => {
      changeCartItemInfo(shopId, productId, item, num);
      // changeShopName(shopId, shopName);
    };
    return {
      categories,
      currentTab,
      handleTabClick,
      list,
      shopId,
      changeCartItem,
      cartList,
    };
  },
};
</script>

<style lang="scss" scoped>
@import "../../style/viriables.scss";
@import "../../style/mixins.scss";
.content {
  display: flex;
  position: absolute;
  left: 0;
  right: 0;
  top: 1.5rem;
  bottom: 0.5rem;
}
.category {
  overflow-y: scroll;
  height: 100%;
  width: 0.76rem;
  background: $search-bgColor;
  &__item {
    line-height: 0.4rem;
    text-align: center;
    font-size: 0.14rem;
    color: #333;
    &--active {
      background: $bgColor;
    }
  }
}
.product {
  overflow-y: scroll;
  flex: 1;
  &__item {
    position: relative;
    display: flex;
    padding: 0.12rem 0;
    margin: 0 0.16rem;
    border-bottom: 0.01rem solid $content-bgColor;
    &__detail {
      overflow: hidden;
    }
    &__img {
      width: 0.68rem;
      height: 0.68rem;
      margin-right: 0.16rem;
    }
    &__title {
      margin: 0;
      line-height: 0.2rem;
      font-size: 0.14rem;
      color: $content-fontcolor;
      @include ellipsis;
    }
    &__sales {
      margin: 0.06rem 0;
      font-size: 0.12rem;
      color: $content-fontcolor;
    }
    &__price {
      margin: 0;
      line-height: 0.2rem;
      font-size: 0.14rem;
      color: $hightlight-fontColor;
    }
    &__yen {
      font-size: 0.12rem;
    }
    &__origin {
      margin-left: 0.06rem;
      line-height: 0.2rem;
      font-size: 0.12rem;
      color: $light-fontColor;
      text-decoration: line-through;
    }
    .product__number {
      position: absolute;
      right: 0;
      bottom: 0.12rem;
      line-height: 0.18rem;
      &__minus {
        position: relative;
        top: 0.02rem;
        color: $medium-fontColor;
        margin-right: 0.05rem;
      }
      &__plus {
        position: relative;
        top: 0.02rem;
        color: $btn-bgColor;
        margin-left: 0.05rem;
      }
    }
  }
}
</style>
